A333128 Ending position of the first occurrence of n in the decimal expansion of Pi.

33, 2, 7, 1, 3, 5, 8, 14, 12, 6, 51, 96, 150, 112, 3, 5, 42, 97, 426, 39, 55, 95, 137, 18, 294, 91, 8, 30, 35, 188, 66, 2, 17, 26, 88, 11, 287, 48, 19, 45, 72, 4, 94, 25, 61, 62, 21, 121, 89, 59, 33, 50, 174, 10, 193, 132, 212, 406, 12, 6, 129, 221, 22, 314

Offset

0,1

Comments

Variant of A032445, considering the position of the least-significant digit of n in the decimal expansion of Pi (A000796).

Links

Table of n, a(n) for n=0..63.

Formula

a(n) = A032445(n) for n=0..9.

a(n) = 1 + A032445(n) for n = 10..99.

a(n) = A004216(n) + A032445(n).

Mathematica

n = 1000;
intPi = Ceiling[N[Pi, n]*10^(n-1)];
piString = ToString[intPi];
Table[StringPosition[piString, ToString[n]][[1, 2]] , {n, 0, 70}]

Crossrefs

Cf. A000796, A004216, A032445.

Sequence in context: A263169 A034060 A032445 * A135088 A346496 A113467

Adjacent sequences: A333125 A333126 A333127 * A333129 A333130 A333131

Keyword

nonn,base

Author

Francesco Vissani, Apr 08 2020

Status

approved